The ZUDC30-02183-S+ from Mini Circuits is a Directional Coupler with Frequency 2 to 18 GHz, Coupling 30 dB, Coupling Variation ±2 dB, Directivity 14 to 25 dB, Average Power 20 W. Tags: Module with Connectors. More details for ZUDC30-02183-S+ can be seen below.